<template>
  <div>
    <template v-for="item in this.MenuList">
      <el-submenu :disabled="item.disabled" :index="item.id+''" v-if="item.children.length>0" :key="item.id+''">
        <template slot="title">
          <i :class="item.icon"></i>
          <span slot="title">{{ item.menuName }}</span>
        </template>
        <MenuTree :MenuList="item.children"></MenuTree>
      </el-submenu>
      <el-menu-item
        v-else
        :disabled="item.disabled"
        :index="item.url+''"
        :route="item.url"
        @click="savePath(item.url)"
        :key="item.id+''"
        style="padding-left: 50px;"
      >
        <i :class="item.icon"></i>
        <span>{{ item.menuName }}</span>
      </el-menu-item>
    </template>
  </div>
</template>

<script>
export default {
  name: 'MenuTree',
  data () {
    return {}
  },
  /*3.在MenuTree中接收传递过来的参数*/
  props: ['MenuList'],
  methods: {
    //保存激活路径
    savePath (path) {
      window.sessionStorage.setItem('activePath', path)
      this.activePath = path
    },
  },
  created () {

  }
}
</script>

<style scoped>

/*这是实现了溢出处理过程*/
.el-menu--collapse span,
.el-menu--collapse i.el-submenu__icon-arrow {
  height: 0;
  width: 0;
  overflow: hidden;
  visibility: hidden;
  display: inline-block;
}
</style>
